As such, it can be attacked by very similar methods. KEY: 14 51 21 21 32 15 41 14 51 21 21 32 15 41 14 51 21 21 32 15ĬT: 37 106 62 36 67 47 86 26 104 53 62 77 27 55 57 66 55 36 54 27īecause each symbol in both plaintext and key is used as a whole number without any fractionation, the basic Nihilist cipher is little more than a numerical version of the Vigenère cipher, with multiple-digit numbers being the enciphered symbols instead of letters. With a plaintext of "DYNAMITE WINTER PALACE" and a key of RUSSIAN. These numbers are then added together in the normal way to get the ciphertext, with the key numbers repeated as required.Ĭonsider the Polybius square created using the keyword ZEBRAS:
POLYBIUS SQUARE EXAMPLE SERIES
This is used to convert both the plaintext and a keyword to a series of two digit numbers. The term is sometimes extended to several improved algorithms used much later for communication by the First Chief Directorate with its spies.įirst the encipherer constructs a Polybius square using a mixed alphabet. In the history of cryptography, the Nihilist cipher is a manually operated symmetric encryption cipher, originally used by Russian Nihilists in the 1880s to organize terrorism against the tsarist regime. JSTOR ( June 2009) ( Learn how and when to remove this template message).
Unsourced material may be challenged and removed. Please help improve this article by adding citations to reliable sources. This article needs additional citations for verification.
0 kommentar(er)
